I still feel that my suggestion of a catalogue of supported aircraft editable only by GSX is worthwhile and also a warning placard at the beginning of the thread about the Exit 2 message not being the default or configured aircraft file. It would save hours of searching, testing and tribulation.
That's not needed. The information you need already in GSX. When you open the airplane configuration editor, in the top under the airplane title, it will tell you exactly from which source GSX is taking the information from which, in order of "quality, from worse to best are:
1 - "Aircraft data used by GSX: SIMCONNECT", which is the absolute bare minimum
2 - "Intelliscene.cfg", the configuration comes from an AES airplane configuration file. A bit better, but not as complete as GSX.
3 - "Internal GSX database", which means the airplane is internally supported by GSX.
4 - "Developer-provided data", the airplane developer has provided a GSX.CFG in the airplane own folder
5 - "User customization in %APPDATA%\Virtuali\Airplanes", you customized this plane
These are the AVAILABLE data sources, and this is also their order of PRIOIRTY ( the number I wrote ), which means if multiple data sources are available, GSX will use the one with the highest number. Of course, you don't have to count or know this because, the 2nd line on the same page will also tell you what GSX is using.
So no, instead of having a separate web page, which might be outdated or inaccurate, you can get the *actual* up to date information of how a certain airplane is supported and what GSX is using right now.